45AR Aluminum Extension

Tax included.

The 45AR extension offers comprehensive yet simple adjustment, ideally suited to riders wishing to add aerobars to their road, gravel or packing bike.

This extension can be used for draft legal triathlon once shortened to meet the ITU rules.


Profile Design has a long history with shorty/DL style bars. This is our latest offering and the most adjustable yet. We wanted to create a bar that would be an easy and comfortable addition to road, gravel and packing bikes.

  • Length: 240mm
  • Angle: 45 Degrees
  • Rise: 62mm (bottom to top)
  • Extension Width: 100mm
  • Outer Diameter: 22.2mm
  • Inner Diameter: 19.4mm
  • Construction: 6061-T6 aluminum
  • Weight: 137g
Tech Guide

Torque settings (all bolts are M6)

  • Bar Clamp: 6Nm
  • Extension Clamp: 5Nm
  • Armrest Bolts: 4.7Nm

    Sonic Ergo 45AR Installation Instructions